243909235 has 8 divisors (see below), whose sum is σ = 292919616. Its totient is φ = 194975040.

The previous prime is 243909229. The next prime is 243909269. The reversal of 243909235 is 532909342.

243909235 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 243909235 - 2⁵ = 243909203 is a prime.

It is a Duffinian number.

It is a zygodrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 243909194 and 243909203.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11746 + ... + 25015.

It is an arithmetic number, because the mean of its divisors is an integer number (36614952).

Almost surely, 2^243909235 is an apocalyptic number.

243909235 is a deficient number, since it is larger than the sum of its proper divisors (49010381).

243909235 is a wasteful number, since it uses less digits than its factorization.

243909235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38093.

The product of its (nonzero) digits is 58320, while the sum is 37.

The square root of 243909235 is about 15617.5937647257. The cubic root of 243909235 is about 624.8024847870.

The spelling of 243909235 in words is "two hundred forty-three million, nine hundred nine thousand, two hundred thirty-five".